A kind of aluminum oxide hollow ball modified friction material and its preparation method

A technology of aluminum oxide hollow balls and friction materials, applied in chemical instruments and methods, friction linings, mechanical equipment, etc., can solve problems such as friction materials falling off from steel backs, damage to colloidal bonding ability, and potential safety hazards in the form of locomotives. Achieve the effect of low wear rate, good heat insulation effect and excellent effect mosaic effect

Active Publication Date: 2020-04-24
ZHENGZHOU BAIYUN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the heat generated by these wear-resistant phases during the friction process is easily dissipated to the interface between the friction material and the steel back, which will cause the interface colloid to heat and soften, and eventually destroy the colloidal bonding ability, causing the friction material and the steel back to fall off, thus giving the locomotive pose a safety hazard in the form of

Method used

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  • A kind of aluminum oxide hollow ball modified friction material and its preparation method
  • A kind of aluminum oxide hollow ball modified friction material and its preparation method
  • A kind of aluminum oxide hollow ball modified friction material and its preparation method

Examples

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Effect test

Embodiment 1

[0027] A hollow aluminum oxide ball modified friction material, comprising a base material, a wear-resistant phase and an adhesive; the base material includes the following raw materials in mass percentages: 8% phenolic resin, 4% aluminum oxide powder, and 6% aramid fiber , vermiculite 4%, calcium carbonate 4%, mica 8%, mineral fiber 6%, ferric oxide 4%, graphite powder 6%, tire powder 6%, zircon 12%, fluorite 10%, cryolite 6%, barium carbonate 10%, and lead-zinc ore 6%; the wear-resistant phase is aluminum oxide hollow spheres, and the quality of the aluminum oxide hollow spheres is 2% of the mass of the base material; the adhesive is coated on the Grinding the surface of the phase, and embedding the wear-resistant phase in the base material, the adhesive is a polyvinyl alcohol solution with a mass concentration of 5%, and the mass ratio of the aluminum oxide hollow spheres to the adhesive is 10:1.

[0028] The preparation method of the aluminum oxide hollow sphere modified f...

Embodiment 2

[0032] A hollow aluminum oxide ball modified friction material, comprising a base material, a wear-resistant phase and an adhesive; the base material includes the following raw materials in mass percentages: 10% phenolic resin, 6% aluminum oxide powder, and 3% aramid fiber , vermiculite 6%, calcium carbonate 6%, mica 10%, mineral fiber 10%, ferric oxide 4%, graphite powder 10%, tire powder 4%, zircon 8%, fluorite 7%, cryolite 4%, barium carbonate 8%, and lead-zinc ore 4%; the wear-resistant phase is aluminum oxide hollow spheres, and the quality of the aluminum oxide hollow spheres is 8% of the mass of the base material; the adhesive is coated on the wear-resistant Grinding the surface of the phase, and embedding the wear-resistant phase in the base material, the adhesive is a carboxymethyl cellulose solution with a mass concentration of 20%, and the mass ratio of the alumina hollow spheres to the adhesive is 20:1 .

[0033] The preparation method of the aluminum oxide hollow...

Embodiment 3

[0037] A hollow aluminum oxide ball modified friction material, including a base material, a wear-resistant phase and an adhesive; the base material includes the following raw materials in mass percentages: 10% phenolic resin, 6% aluminum oxide powder, and 6% aramid fiber , vermiculite 5%, calcium carbonate 5%, mica 9.6%, mineral fiber 8%, ferric oxide 4%, graphite powder 8%, tire powder 6%, zircon 10%, fluorite 6.4%, cryolite 4%, barium carbonate 8%, lead-zinc ore 4%, the mass ratio of fluorite, cryolite, barium carbonate and lead-zinc ore is 8:5:10:5;

[0038] The wear-resistant phase is alumina hollow spheres, and the mass of the alumina hollow spheres is 3% of the mass of the base material; the adhesive is coated on the surface of the wear-resistant phase, and the wear-resistant phase is embedded in the base material , the adhesive is a polyvinyl alcohol solution with a mass concentration of 5%, and the mass ratio of the aluminum oxide hollow spheres to the adhesive is 13:...

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Abstract

The invention provides an aluminum oxide hollow sphere modified friction material and a preparation method thereof. The friction material comprises a matrix material, a wear-resistant phase and an adhesive. The matrix material is prepared from the following raw materials in percent by mass: 8-10% of phenolic resin, 4-6% of aluminum oxide powder, 2-6% of aramid fibers, 4-6% of vermiculite, 4-6% ofcalcium carbonate, 8-10% of mica, 6-10% of mineral fibers, 2-4% of iron sesquioxide, 6-10% of graphite power, 4-6% of tyre powder, 8-12% of zirconite, 6-10% of fluorite, 4-6% of cryolite, 8-10% of barium carbonate and 4-6% of lead zinc ores. The wear-resistant phase is aluminum oxide hollow spheres which account for 2-8% by mass of the matrix material. The adhesive is coated to the surface of thewear-resistant phase and embeds the wear-resistant phase to the matrix material. The aluminum oxide hollow sphere modified friction material is high in friction coefficient, low in wear rate and goodin wear resistance and friction adding performance.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to a friction material modified by aluminum oxide hollow balls and a preparation method thereof. Background technique [0002] Friction materials are required to have good braking performance to ensure that the vehicle can be braked urgently when braking is required during driving, and the vehicle can be decelerated and stopped in time. Friction with the friction pair for a long time causes the friction material to be consumed too quickly. In order to ensure a certain friction life, it is necessary to add a wear-resistant phase to the matrix of the friction material. The traditional wear-resistant phase is mainly some ceramic powder. Such as alumina powder, ferric oxide powder and silicon dioxide powder, etc. These powders have good hardness and can play a role in wear resistance. However, the heat generated by these wear-resistant phases during the friction process is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02F16D65/78F16L59/06C09K3/14
CPCC09K3/149F16D65/78F16D69/02F16D2065/785F16D2200/0008F16D2200/0026F16D2200/003F16D2200/0043F16D2200/0052F16D2200/0086F16L59/06
Inventor 张生国
Owner ZHENGZHOU BAIYUN IND
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